Alphabet Inc.'s GOOGL shares fell 0.2% after the office of the Texas Attorney General revealed that it will file an antitrust lawsuit against the company.Shares of Southwest Airlines Co. LUV dropped 1.5% after reporting its November load factor below expectation and raising fourth-quarter average daily cash burn estimation.Tilray Inc.'s TLRY soared 18.6% following news of its proposed merger with rival Aphria Inc. APHA.Shares of Galapagos NV GLPG plunged 18.8% after its partner Gilead Sciences Inc. GILD decided not to pursue FDA approval for its rheumatoid arthritis drug filgotinib.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Southwest Airlines Co. (LUV): Free Stock Analysis Report Gilead Sciences, Inc. (GILD): Free Stock Analysis Report Alphabet Inc. (GOOGL): Free Stock Analysis Report Galapagos NV (GLPG): Free Stock Analysis Report Aphria Inc. (APHA): Free Stock Analysis Report Tilray, Inc. (TLRY): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research